netcdf sgptdmaapssizeC1.c1.20141120.010824 { dimensions: time = UNLIMITED ; // (10 currently) diameter = 215 ; aqc_test = 7 ; variables: int base_time ; base_time:string = "2014-11-20 01:08:24 GMT" ; base_time:long_name = "Base time in Epoch" ; base_time:units = "seconds since 1970-1-1 0:00:00 0:00" ; base_time:ancillary_variables = "time_offset" ; double time_offset(time) ; time_offset:long_name = "Time offset from base_time" ; time_offset:units = "seconds since 2014-11-20 01:08:24 0:00" ; time_offset:ancillary_variables = "base_time" ; double time(time) ; time:long_name = "Time offset from midnight" ; time:units = "seconds since 2014-11-20 00:00:00 0:00" ; float diameter(diameter) ; diameter:long_name = "Particle diameter" ; diameter:units = "um" ; float number_concentration_DMA_APS(time, diameter) ; number_concentration_DMA_APS:long_name = "Size-resolved particle number concentration (dN/dlogDP) from differential mobility analyzer and aerosol particle sizer" ; number_concentration_DMA_APS:units = "1/cm^3" ; number_concentration_DMA_APS:valid_min = 0.f ; number_concentration_DMA_APS:valid_max = 100000.f ; number_concentration_DMA_APS:missing_value = -9999.f ; number_concentration_DMA_APS:ancillary_variables = "qc_number_concentration_DMA_APS" ; number_concentration_DMA_APS:description = "This field contains measurements from both the DMA and APS instruments." ; int qc_number_concentration_DMA_APS(time) ; qc_number_concentration_DMA_APS:long_name = "Quality check results on field: Size-resolved particle number concentration (dN/dlogDP) from differential mobility analyzer and aerosol particle sizer" ; qc_number_concentration_DMA_APS:units = "unitless" ; qc_number_concentration_DMA_APS:flag_method = "bit" ; qc_number_concentration_DMA_APS:missing_value = -9999.f ; qc_number_concentration_DMA_APS:description = "This field contains bit packed integer values where each bit represents a QC test on the data. Non-zero bits indicate the QC condition given in the description for those bits; a value of 0 (no bits set) indicates the data has not failed any QC tests" ; qc_number_concentration_DMA_APS:bit_1_description = "(DMA only) Number Concentration <300 cm^-3 OR >30,000 cm^-3" ; qc_number_concentration_DMA_APS:bit_1_assessment = "Indeterminate" ; qc_number_concentration_DMA_APS:bit_2_description = "(DMA only) Volume Concentration <0.5 um^3/cm^3 OR >50 um^3/cm^3" ; qc_number_concentration_DMA_APS:bit_2_assessment = "Indeterminate" ; qc_number_concentration_DMA_APS:bit_3_description = "(DMA only) Unexpected volume concentration distribution slope flag at 0.12 um and 0.10 um > 1.0" ; qc_number_concentration_DMA_APS:bit_3_assessment = "Indeterminate" ; qc_number_concentration_DMA_APS:bit_4_description = "(DMA only) Poor correlation between up and down scan distributions is < 0.9" ; qc_number_concentration_DMA_APS:bit_4_assessment = "Indeterminate" ; qc_number_concentration_DMA_APS:bit_5_description = "(APS only) Volume Concentration <0.5 um^3/cm^3 OR >50 um^3/cm^3" ; qc_number_concentration_DMA_APS:bit_5_assessment = "Indeterminate" ; qc_number_concentration_DMA_APS:bit_6_description = "(APS only) Unexpected volume concentration distribution slope flag at 0.12 um and 0.10 um > 1.0" ; qc_number_concentration_DMA_APS:bit_6_assessment = "Indeterminate" ; qc_number_concentration_DMA_APS:bit_7_description = "(Both DMA, APS) Average residual between the measured DMA and APS size distributions in the overlap of their size ranges was greater than 0.5." ; qc_number_concentration_DMA_APS:bit_7_assessment = "Indeterminate" ; qc_number_concentration_DMA_APS:bit_8_description = "(DMA only) Number Concentration <100 cm^-3 OR >100,000 cm^-3" ; qc_number_concentration_DMA_APS:bit_8_assessment = "Bad" ; qc_number_concentration_DMA_APS:bit_9_description = "(DMA only) Volume Concentration <0.2 um^3/cm^3 OR >200 um^3/cm^3" ; qc_number_concentration_DMA_APS:bit_9_assessment = "Bad" ; qc_number_concentration_DMA_APS:bit_10_description = "(DMA only) Unexpected volume concentration distribution slope flag at 0.12 um and 0.10 um > 3.0" ; qc_number_concentration_DMA_APS:bit_10_assessment = "Bad" ; qc_number_concentration_DMA_APS:bit_11_description = "(DMA only) Poor correlation between up and down scan distributions is < 0.3" ; qc_number_concentration_DMA_APS:bit_11_assessment = "Bad" ; qc_number_concentration_DMA_APS:bit_12_description = "(APS only) Volume Concentration <0.2 um^3/cm^3 OR >200 um^3/cm^3" ; qc_number_concentration_DMA_APS:bit_12_assessment = "Bad" ; qc_number_concentration_DMA_APS:bit_13_description = "(APS only) Unexpected volume concentration distribution slope flag at 0.12 um and 0.10 um > 3.0" ; qc_number_concentration_DMA_APS:bit_13_assessment = "Bad" ; qc_number_concentration_DMA_APS:bit_14_description = "(Both DMA, APS) Average residual between the measured DMA and APS size distributions in the overlap of their size ranges was greater than 0.8." ; qc_number_concentration_DMA_APS:bit_14_assessment = "Bad" ; int aqc_number_concentration_DMA_APS(time, aqc_test) ; aqc_number_concentration_DMA_APS:long_name = "Auxiliary quality check results on field: Size-resolved particle number concentration (dN/dlogDP) from differential mobility analyzer and aerosol particle sizer" ; aqc_number_concentration_DMA_APS:units = "unitless" ; aqc_number_concentration_DMA_APS:missing_value = -9999.f ; aqc_number_concentration_DMA_APS:description = "Data quality flags are as follows: \n", " \n", " A value of 0 indicates no flag. \n", " A value of 1 indicates that the distribution is somewhat unusual and may be inaccurate. \n", " These distributions are used in the calculated products available in other datastreams. \n", " A value of 2 indicates that the distribution is highly unusual and is likely inaccurate. \n", " These distributions are not used in the calculated products available in other datastreams. \n", " \n", " For each value of aqc_test, interpret the values as follows: \n", " \n", " \n", " aqc_test = 1, (DMA only) Number concentration out of range flag: \n", " A value of 1 indicates that the integrated number concentration was less than 300 cm^-3 or \n", " greater than 30,000 cm^-3. \n", " A value of 2 indicates that the integrated number concentration was less than 100 cm^-3 or \n", " greater than 100,000 cm^-3. \n", " \n", " aqc_test = 2, (DMA only) Volume concentration out of range flag: \n", " A value of 1 indicates that the integrated volume concentration was less than 0.5 um^3/cm^3 \n", " or greater than 50 um^3/cm^3. \n", " A value of 2 indicates that the integrated volume concentration was less than 0.2 um^3/cm^3 \n", " greater than 200 um^3/cm^3 . \n", " \n", " aqc_test = 3, (DMA only) Unexpected volume concentration distribution slope flag: \n", " A value of 1 indicates that the ratio of the differential volume concentration (dV/dlogDp) \n", " at 0.12 um and 0.10um is greater than 1.0. \n", " A value of 2 indicates that the ratio of the differential volume concentration (dV/dlogDp) \n", " at 0.12 um and 0.10um is greater than 3.0. \n", " \n", " aqc_test = 4, (DMA only) Poor correlation between up and down scan distributions flag: \n", " A value of 1 indicates that the correlation between the measured up and down scan \n", " distributions was less than 0.9. \n", " A value of 2 indicates that the correlation between the measured up and down scan \n", " distributions was less than 0.3. \n", " \n", " aqc_test = 5, (APS only) Volume concentration out of range flag: \n", " A value of 1 indicates that the integrated volume concentration was less than 0.5 um^3/cm^3 \n", " or greater than 50 um^3/cm^3. \n", " A value of 2 indicates that the integrated volume concentration was less than 0.2 um^3/cm^3 \n", " greater than 200 um^3/cm^3. \n", " \n", " aqc_test = 6, (APS only) Unexpected volume concentration distribution slope flag: \n", " A value of 1 indicates that the ratio of the differential volume concentration (dV/dlogDp) \n", " at 0.12 um and 0.10um is greater than 1.0. \n", " A value of 2 indicates that the ratio of the differential volume concentration (dV/dlogDp) \n", " at 0.12 um and 0.10um is greater than 3.0. \n", " \n", " aqc_test = 7, (Both DMA, APS) Large discrepancy between DMA and APS distributions in overlap \n", " size range flag: \n", " A value of 1 indicates that the average residual between the measured DMA and APS size \n", " distributions in the overlap of their size ranges was greater than 0.5. \n", " A value of 2 indicates that the average residual between the measured DMA and APS size \n", " distributions in the overlap of their size ranges was greater than 0.8. " ; float integrated_number_concentration_DMA(time) ; integrated_number_concentration_DMA:long_name = "Integrated number concentration from differential mobility analyzer" ; integrated_number_concentration_DMA:units = "1/cm^3" ; integrated_number_concentration_DMA:missing_value = -9999.f ; float integrated_volume_concentration_DMA(time) ; integrated_volume_concentration_DMA:long_name = "Integrated volume concentration from differential mobility analyzer" ; integrated_volume_concentration_DMA:units = "um^3/cm^3" ; integrated_volume_concentration_DMA:missing_value = -9999.f ; float ratio_volume_conc_6to5_DMA(time) ; ratio_volume_conc_6to5_DMA:long_name = "Ratio of the amplitude (dV/dlogDp) of the volume concentration at 0.6um to 0.5um from differential mobility analyzer" ; ratio_volume_conc_6to5_DMA:units = "unitless" ; ratio_volume_conc_6to5_DMA:missing_value = -9999.f ; float correlation_up_down_DMA(time) ; correlation_up_down_DMA:long_name = "Correlation coefficient between up and down scan distributions from differential mobility analyzer" ; correlation_up_down_DMA:units = "unitless" ; correlation_up_down_DMA:missing_value = -9999.f ; float integrated_volume_concentration_APS(time) ; integrated_volume_concentration_APS:long_name = "Integrated volume concentration from aerosol particle sizer" ; integrated_volume_concentration_APS:units = "um^3/cm^3" ; integrated_volume_concentration_APS:missing_value = -9999.f ; float ratio_volume_concentration_12to10_APS(time) ; ratio_volume_concentration_12to10_APS:long_name = "Ratio of the amplitude (dV/dlogDp) of the volume concentration at 0.12um to 0.10um from aerosol particle sizer" ; ratio_volume_concentration_12to10_APS:units = "unitless" ; ratio_volume_concentration_12to10_APS:missing_value = -9999.f ; float size_range_residual_DMA_and_APS(time) ; size_range_residual_DMA_and_APS:long_name = "Average residual ([(dN/dlogDp)DMA - (dN/dlogDP)APS]/(dN/dlogDp)DMA) in overlap of size ranges between measured DMA and APS size distributions" ; size_range_residual_DMA_and_APS:units = "unitless" ; size_range_residual_DMA_and_APS:missing_value = -9999.f ; float lat ; lat:long_name = "North latitude" ; lat:units = "degree_N" ; lat:valid_min = -90.f ; lat:valid_max = 90.f ; lat:standard_name = "latitude" ; float lon ; lon:long_name = "East longitude" ; lon:units = "degree_E" ; lon:valid_min = -180.f ; lon:valid_max = 180.f ; lon:standard_name = "longitude" ; float alt ; alt:long_name = "Altitude above mean sea level" ; alt:units = "m" ; alt:standard_name = "altitude" ; // global attributes: :command_line = "tdmaapssize_ingest.perl -i 20141120" ; :process_version = "$State: xdc-tdmaapssize-1.1-6 $" ; :dod_version = "tdmaapssize-c1-1.0" ; :TDMA = "Tandem Differential Mobility Analyzer" ; :DMA = "Differential Mobility Analyzer" ; :APS = "Aerosol Particle Sizer" ; :site_id = "sgp" ; :platform_id = "tdmaapssize" ; :facility_id = "C1: Lamont, Oklahoma" ; :data_level = "c1" ; :location_description = "Southern Great Plains (SGP), Lamont, Oklahoma (C1)" ; :datastream = "sgptdmaapssizeC1.c1" ; :Conventions = "ARM_Convention-1.0" ; :qc_field_information = "Data is suspect if there are less than 18 measurements for the day.\n", "See the corresponding \"qc\" and \"aqc\" variable descriptions for details." ; :IDL_version = "IDL (x86 / linux / unix / 8.0)" ; :input_source = "/data/collection/sgp/sgptdmaapssizeC1.00/sgptdmaapssizeC1.00.20141120.010824.raw.asc.tar" ; :history = "Created by tdmaapssize_ingest Tue Aug 30 20:58:47 2016" ; }